Experienced drinking tea with 〜た+ことがある
Grammar Explanation: Previous experience with 〜た+ことがある

Cocoa picks a drink from the tea shop menu.
- ココア:
- 「やっぱダンディー・ライオンだよね!」
- “Dandy Lion is definitely the one!”
- チノ:
- 「飲んだことあるんですか?」
- “Have you drunk it before?”
- Literal: “Do you have a thing where you drank it?”
- “Have you drunk it before?”
Key Points
1飲( んだことある asks about prior experience
- Chino asks whether Cocoa has ever drunk dandelion tea, rather than whether she drank it at one known time.
2飲( む becomes the past form 飲( んだ
- The past-form clause comes before ことがある. Casual speech drops が from ことがある here.
3んですか asks for the basis of Cocoa’s choice
- Chino’s explanatory question checks whether previous experience supports Cocoa’s confident order.
See Also
- External: Past tense with 〜た・〜だ
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